2009 - 2010

MKIII Hydraulic Jib
Reefing and Furling
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MKIII hydraulic furling allows you to reef, furl, or set sails
with the touch of a button. The MKIII hydraulic furler is
made of Hardkote-anodized aluminum and mirror-polished
investment-cast stainless steel. The streamlined housing
fits easily within existing pulpits. Double swivels at the
tack and head help shape sails when reefing.
The furler’s lower toggle fixes at 90-degree intervals to
accept any chainplate direction. The reversible hydraulic
drive uses a high-reduction, double-enveloping worm gear
to prevent reefed sails from unfurling under load.
Hydraulic MKIII furlers are suitable for cruising boats from
50 to 120 feet (15-36.6 m) with headstays of up to 1-inch
wire (25 mm) or -115 rod (22.2 mm).
Worldwide parts and service.
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Details Make
the Difference
Torlon ® Ball Bearings
Large-diameter Torlon ® ball bearings in halyard and
tack swivel minimize friction, require no lubrication
or isolating seals.
Headstay adjustment system
The winch handle system for headstay adjustment and
tensioning uses a self-locking bevel gear leadscrew.
Carbon Hydraulic Jib Reefing and Furling
Proven in the extreme conditions found in around-theworld
sailing, carbon hydraulic jib reefing and furling
systems combine the beauty of stainless with the elegant
finish of carbon. Single groove foils are filament-wound
with standard modulus carbon fiber that maximizes
torsional strength and saves 30 to 200 pounds (13-90 kg).
The lower unit features a carbon fiber torque tube and
cowling. Call for availability.
1. Independent Swivels
Independent head and tack swivels improve
sail shape when partially furled.
2. Strong Foils
Aerodynamic Air Foils ® handle extreme reefing
loads. Tough triple-interlock foil joints
withstand years of torque loading.
3. Stainless Steel Gear Housing
Stainless steel investment-cast gear housing
features hardened steel gears running in oil.
4. Manual Override System
MKIII hydraulic furlers feature a unique
manual override system. Fluid is automatically
diverted when a winch handle is inserted for
safe manual operation.
5. Soft Attachment for Halyard, Head
and Tack on Carbon Units
Soft line attachment is extremely strong and
takes the place of heavy stainless steel
shackles.
6. Filament-Wound Carbon Foils
Maximized torsional resistance foils save
weight forward and aloft where it is critical.
Smooth elegant carbon fiber finish is UV
resistant.
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DO NOT use Harken equipment for human suspension.
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